EP 1628381 A4 20091111 - ELECTRIC MOTOR
Title (en)
ELECTRIC MOTOR
Title (de)
ELEKTROMOTOR
Title (fr)
MOTEUR ELECTRIQUE
Publication
Application
Priority
- JP 2004007592 W 20040526
- JP 2003151917 A 20030529
Abstract (en)
[origin: EP1628381A1] The vibration and noise excited by the electromagnetic exciting force in the radial direction of an electric motor are suppressed. In an electric motor 100, a rotor 1 is divided into four rotor pieces 3, 4, 5, and 6 for an axial length of 2L of one group of the rotor core, and for example, the four rotor pieces 3, 4, 5, and 6 are ideally 0.29L, 0.71L, 0.71L, and 0.29L in axial length in the axial direction, and permanent magnets 2 of the rotor pieces 3, 4, 5, and 6 are arranged in the circumferential direction so that the phase differences of the electrical angle are 0, À., 0, and À. Further, when an effect is obtained even if the ideal axial length is changed, the tolerance of the aforementioned axial length is ±0.1L.
IPC 8 full level
H02K 1/18 (2006.01); H02K 1/27 (2006.01); H02K 21/14 (2006.01); H02K 29/03 (2006.01)
CPC (source: EP KR US)
H02K 1/165 (2013.01 - KR); H02K 1/187 (2013.01 - KR); H02K 1/27 (2013.01 - KR); H02K 29/03 (2013.01 - EP KR US); H02K 2201/06 (2013.01 - EP KR US)
Citation (search report)
- [A] JP 2001231196 A 20010824 - MATSUSHITA ELECTRIC IND CO LTD
- [A] JP 2000060039 A 20000225 - SHARP KK
- [A] JP 2000069695 A 20000303 - MATSUSHITA ELECTRIC IND CO LTD
- [A] JP S60181174 A 19850914 - HITACHI FUNMATSU YAKIN KK
- [AD] JP 2001359266 A 20011226 - AICHI EMERSON ELECTRIC
- [AD] JP 2000308286 A 20001102 - YAMAHA MOTOR CO LTD
- [AD] JP 2000245117 A 20000908 - SEIKO INSTR INC
- [AD] JP H06245417 A 19940902 - YASKAWA ELECTRIC CORP
- See references of WO 2004107529A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1628381 A1 20060222; EP 1628381 A4 20091111; EP 1628381 B1 20131016; CN 1799176 A 20060705; CN 1799176 B 20120418; JP 2004357405 A 20041216; JP 4270942 B2 20090603; KR 100751992 B1 20070828; KR 20060013562 A 20060210; US 2007205689 A1 20070906; US 7518277 B2 20090414; WO 2004107529 A1 20041209
DOCDB simple family (application)
EP 04734928 A 20040526; CN 200480014882 A 20040526; JP 2003151917 A 20030529; JP 2004007592 W 20040526; KR 20057022644 A 20051128; US 55836604 A 20040526